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Evaporator coil

Greetings,
I'm having issues with an installation of a heat/ac unit. A technician (not the original installer) said the ac evaporator coil was installed in reverse. The installer said the unit is a mulit-positional unit and it does not matter what position it is installed. The apex of the coil is pointed toward the furnace and as a result the manufacturers insulation was torn from the plenum walls and sitting on the coils (trapped when the air flows across it). Does multi-positional mean that you can have the apex of the coil pointed toward the air flow? Or does it mean that the ac coil can be installed in a vertical or horizontal position, but not installed in reverse? Thanks in advance for your wisdom.

As I said, the unit is installed in the horizontal position. The 'apex' is facing the air flow. This has caused the insulation (manufacturer's insulation that is glued to the plenum/cabinet) to tear off and become trapped against the coil when the unit runs. So, the installer saying that the unit is a multi-positional type unit is true, however, it does not mean that it is a unit that can be installed in reverse of the flow. Correct?

If you read the OP, and if this is installed as an upflow....how are you going to install the evap coil effectively? Also, the OP talks about multi-positional....that is talking about furnace....not evap.

Originally Posted by SadDad

Greetings,
I'm having issues with an installation of a heat/ac unit. A technician (not the original installer) said the ac evaporator coil was installed in reverse. The installer said the unit is a mulit-positional unit and it does not matter what position it is installed. The apex of the coil is pointed toward the furnace and as a result the manufacturers insulation was torn from the plenum walls and sitting on the coils (trapped when the air flows across it). Does multi-positional mean that you can have the apex of the coil pointed toward the air flow? Or does it mean that the ac coil can be installed in a vertical or horizontal position, but not installed in reverse? Thanks in advance for your wisdom.

To clarify, the system is installed in the attic and is lying on its side. The installation is like this: first the heater is installed with the air flow to the right (or the base of the unit), then the evaporator coil (with the apex of the coil facing the heater/heat exchanger), then the plenum with the distribution lines. Does this explanation help?